With about six weeks to go until Election Day, a new KPIX 5 / Survey USA poll released Thursday finds Oakland Mayor Jean Quan is in trouble as she seeks re-election. The poll finds those who supported her four years ago are abandoning her in droves.

The cause of a vehicle collision involving Oakland Mayor Jean Quan last month in West Oakland remains under investigation and cellphone use by either driver involved in the collision has not been ruled out, police said Tuesday.

Oakland police said Friday that they could not determine who was at fault in a vehicle collision involving Mayor Jean Quan last month but they have ruled out the use of cellphones by either driver as a factor.